Deductions & credits

Yes I have a 401k not thru my employer that I put money from savings into. I have a Form 5498 for that account.

Why is there a way to add what your 401k from employment contributions are? This is what I am confused about. Will the IRS know what the W-2 shows is a 401k account? Box 1 on the W-2 reflects contributions to my 401k at work. I am really not sure if adding the amounts counts as a deduction thou?